Self-playing musical siren-horn



1. PAPP.

S ELF PLAYING MUSICAL SIREN HORN.

Patented Sept. 9,

JOSEPH PAPP, OF REVERE, MASSACHUSETTS.

SELF-PLAYING MUSICAL SIREN-HORN.

Specification of Letters Patent.

Patented Sept. 9, 1919.

Application filed November 4, 1918. Serial No. 261,163.

To all whom it may concern:

Be it known that I, Josnrn PAPP, a citizen of the United States, residing at Revere, in the county of Suffolk and the State of Massachusetts, have invented a new machine which will produce sounds of unusual intensity and which I would call the Self-Playing Musical Siren-Horn, of which the following is a specification.

My objects are: to provide a selfplaying musical instrument which gives intense musical sounds and can be flexible enough to produce varieties of musical accent, expression and quality.

I attain these objects by the mechanism and a variable perforated flexible tape in combination, as illustrated.

Figure 1 shows how tape unwinds from roller 7, runs .under spring 10, around rollers 4-5 and over 6 and over rollers l and 2 and winds up on roller 3, Fig. 1 represents a side view of the machine, Fig. 2 represents sectional view of the revolving nozzle and its connections, while Fig. 3 represents top View of the whole machine, Fig. 4 is a cross-section of nozzles dismounted.

Reference characters 12, 13, 14:, 14, show the steam supply from the stationary supply pipe 12 to the hollow rotating pipe 12 and a steam tight adjustable connection between these two pipes.

Fig. 1 shows the course and the manner the tape is wound and run in this machine.

Fig. 3 number 17 represents the friction gear shaft and its members at either end, to transmit rotary motion from main shaft to disks 16 and 15 and to rotating pipe 12 with its nozzles attached.

In order to shift the friction gears on shaft 17, relative to the disks 15 and 16 and thereby vary the speed of rotation of nozzles. a lever 18 is suitably mounted on the main frame and provided with a suitable handle, this lever can be set in any desired position to rotate nozzles at various speed.

20 represents belt brake applied on sup ply roller to regulate tension of tape. In Fig. 1 number 8 is the sound box. 9 is the adjustable horn and 11 represents the variable perforated tape. Arrows indicate course of tape.

In order to operate machine we proceed as follows: The tape is led from the supply roller 7, through the machine as shown in Fig. 1, and secured to the take up roller 8. Steam or compressed air is introduced through pipe 12 and the nozzles, and the lever 18 is set to transmit the proper speed to nozzles through the friction gears 15, 16, 17. The spring 10, brake 20 and various guide rollers all act to properly tension the tape.

It will be readily seen that the character of the sound will vary according to the pressure of the steam, the speed of rotation of nozzles and movement of tape as well as theshape and relative arrangements of the various perforations in the tape.

What I claim as my own invention is this:

In a selfplaying musical instrument of the siren horn type, the combination of a take-up and a let-off roll, a variably perforated tape supported on said rolls, a pair of rotatable nozzles, means for supporting said tape adjacent to said nozzles as illustrated, and means for uniformly moving said tape past said nozzles and means for uniformly rotating said nozzles and take-up roll, and means for supplying steam or air under pressure to said nozzles.

JOSEPH PAPP.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. O. 

